HI Daeho,You can also check character set in both databases.Database As
mentioned in the link shared by Ananya , this issue could be The string
operands (other than an NLSPARAMS argument) to an operator or built-in
function do not have the same character set.An NLSPARAMS operand is not
in the database character set.String data with character set other than
the database character set is passed to a built-in function not
expecting it.Also you can enable to sql log and see what actual query is
bein...